CAVITY RING DOWN DYE-LASER SPECTROSCOPY OF JET-COOLED METAL-CLUSTERS - CU2 AND CU3

被引:139
作者
OKEEFE, A [1 ]
SCHERER, JJ [1 ]
COOKSY, AL [1 ]
SHEEKS, R [1 ]
HEATH, J [1 ]
SAYKALLY, RJ [1 ]
机构
[1] UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720
关键词
D O I
10.1016/0009-2614(90)85390-X
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Direct optical absorption measurements of jet-cooled metal clusters formed in a pulsed molecular beam have been made using a sensitive new absorption technique employing pulsed laser sources. Metal clusters and other metal containing species have been observed in this initial study. Absorption measurements of the Cu3 2A′12E′ system reveal strong intensities for vibronic bands seen only weakly in previous photoionization and LIF studies due to predissociation of the upper level. A previously unobserved weak band has been identified and tentatively assigned as an excitation out of the higher energy Jahn-Teller component of the cluster ground state. These results illustrate the potential of this approach for studying larger metal cluster species. © 1990.
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页码:214 / 218
页数:5
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